Shaft-coupling



(No Model.)

F. M. ROOTS;

SHAFT COUPLING. No; 349,365. Patented Sept. 21,1886.

Mites 1,. gurenior UNITED STATES Parana. since-3..

FRANCIS M. ROOTS, OF CONNERSVILLE, INDIANA.

snAi-"nooueune.

SPECIFICATION forming pafl. of Letters Patent Nag-249,365, datedSeptember- 21,1886.

Application filed January 19, i

886. Serial N0.1F9,061. tNonrodel.)

To all whom it may concern: Be it known that I, FRANCIS M. Roo'rs, a.citizen of the United States, and a resident of I Oonnersville, in thecounty of Fayette and State of Indiana, have invented certain new anduseful Improvements in Shaft-Ooupli n'gs, of which the following is aspecification.

The object of my invention is to provide a cheap, durable, and reliableflexible coupling for shafts, which in use will permit the connectedshafts to run smoothly without jar or friction, .evenihough theconnected parts are not in exact axial alignment.

\Vith this object in View my invention con- :5 sists in the combinationof two flexible metallic disks, each having a hub to be secured upon theend of the shaft-section. The pair of disks, when united, have flangesor an intervening ring between thei r adjacent faces, at or near theperiphery, to separate them from each other,

so as to permit the disks to spring independent of each other, tocompensate for any variation from axial alignment of the shaft-sectionscoupled by them.

In the accompanying drawings, in which like parts are represented bysimilar referenceletters wherever they occur throughout the variousviews, Figure 1 is a side elevation of my preferred form of couplingsecured in place 0 upon the shaft, which is shown in transverse section.Fig. 2 is an axial section through the same. Fig. 3 is a face elevationof one side of a modified form of my coupling and the separating-ring inposition upon it, the opposite 3 5 side being removed.

of Fig. 3.

In my preferred form of coupling (shown in Figs. 1 and 2) the disks Aand B have annular flanges a and Z) projecting from their adja- 0 centfaces. These flanges are turned off true to join with each other, andthe edges perfo- Fig. 4- is an axial section rated to receivescrew-bolts O, by which the two members are firmly held together. Thedisk A has also an overlapping flange, a", and 43 the disk B is'hmallenough to snugly fit within this flange This construction makes a neatfinish and adds strength to the coupling; but it is not essential, asboth members of the coup 1 ling may be like the member 13. her offitting, the hubs D are made in one piece with the disks; but the sameresult would be accomplished by making the hubs separately and unitingthem to the disks in any approved manner.

In the n odificaiion shown in Figs. .3 and 4 the disks ii adjacentfaces, the flanges a and I) being omiti'ed, and the ringllsubstii utedin place ofthem, the bolts G,passing through the disks and ring, firmlyclamping the parts together. The con p-. ling issecured upontheshalt-scctions by a key,

f; or set-screws may be used instead the ke if desired.

I prefer to make my couplin U1 cast metal, and have found in practicethat it has suiiicien't fiexure for general purposes. it, however,extraordinary flexibility be required, the disks may be made ofsheet-steel and secured to cast-metal hubs. In this case the ring Eused, and may also be made of cast metal.

What I claim as new, and desire to secure by Letters Patent, is-

1. A flexible coupling for shafts, substantiuily as hcreinbcl'ore setforth, which consists of two thin metal disks separated from each otherby intervening llunges or a ring near the periphery, and having hubsl'orsecuring them on the sliaft seci ions.

2. in a shaft-coupiing, the combination, sub stantialfy as specified. oithe disks A B, having ilau Thecom]iination,substantiailyassctlbrih, in ailexible slum-coupling, of the disk A, having flange u, and the disk '1,having the flange b, and made small enough to lit within the flan-re eofdisk A, with bolts 0, for Scour ing the parts together, and hubs 1), forscour. ing them on the ends of the shaft-sect ions.

FRANCIS ltl. ROOTS. \s'itnesscs: v

(lino. J. MURRAY, EDGAR OILun.

To save lus a I), hubs l), and fastening-bolts

